Coke-oven wall



0. PIETTE.

COKE OVEN WALL.

APPLICATION FILED NOV. 6. 1918.

PatentedSept. 19, 1922 WIT/V588 6. WWW

A TTORIVE VS Patented Sept. 19, 1922 1,429,252 T form c oLIv'Inn rrnrrn, or BRUSSELS, BELGIU1\$,'ASSIGNOR, BY MESNEASSIGNMENTS', To

BELGIAN Anrnnronn coxn ovcens oonronamron, OF'WILMINGTON,- DELAWARE,

A CORPORATION OF DELAWARE."

ooxn-ovnn WALL.

Application filed November 6,1918. 1 Serial No. 2 1,421.

enknrnntrnnaa ran raovrsrcns 03 m: Acr or MARCH 3, 1921,41 srar. L., 1313.

To'aZZ whom may concern Be itknown that 1,.OLrvnirt PIETTE, a subject'of the King of'the Belgians, and a resident of Brussels, Belgium, have invented certain new and useful Improvements in Coke-Oven l/Valls (for which I have filed application for patent in France October 22, 1917, Patent No.7187 280) of which the following is aspecification.

' In coke ovens as generally constructed, the l'luewa'llsor piedroits are built up of solid headers and stretchers, the headers being spacedfrom each other to form the fines through which heating gases pass. The stretchers, which in this well known con"- struction are simply placed one upon the other, have to be made of considerable thickness in order to enable'them to resist the strain caused by the mechanicalle'mptying and cleaning of the oven; this thickness is usuallv from twelve to fourteen centimeters at the bottom of the piedroit, and about ten' centimeters toward the top. The objection to stretchers of such thickness is that they transmit heat but poorly and slowly from the heating channels or fines to the coking chambers, thereby reducing the efficiency and the output of the oven.

By the novel construction described and claimed hereinafter, I avoid these drawbacks and obtain a strong flue wall'or piedroit in which the heat-transmitting. portions are.

relatively thin so that heat will be transmitted readily from the flues to the coking cl1ambers,with a resulting increase in output and efliciency.

In the accompanying drawings Figs. 1 and 2 are similar horizontal sections showing two dilferent constructions of flue walls or piedroits embodying my present invention, Figs. 3 and a are perspectiveviews, respectively, of the bricks and header bricks shown in Fig. 1, and Fig. 5 is a'sirnilar View showing the bricks of Fig. 2.

In Fig. 1 the bricks 1, 2 of the piedroit are alike. Each of these bricks is hollow so as to form a channel or flue a, and is provided, at the exposed face, with unsymmetrical projections 39 and 0 respectively. The

relatively long projections c are of such v length as to come in contact with those of adjoining bricks, While the short projec-v tions 6 of adjoining bricks do notco ne into mutualcontact, The] side surfaces of the bricks are concave, and between, them are fitted header bricks 3 having corresponding.

convex side surfaces] It will be seen that i the bricks .1, 2 and 3 extend, from one exposed fa'ce of the flue wall to within a distance from the other exposed face. [One of these exposed faces is formed by the bricks- 1, and the other'bythe bricks 2, 3. Each brick '1, 2, has a transverse inner memberv 4:,

these jinembers forming (a partition between ad acent fiues a. The bricksfl areplaced' a iternately in different positions, as shown, and the bricks 2, likewise, so that twobricks 1 or 2 whiclrare in contact with eachother by their long projections c will be out of contact with the adjoining bricks, there being a regular alternation of contacting pro ections c andY'non-contacting projec tions In the ill strated exani'plethe separated relation of the noneco'nt'acting short projections Z) is maintained bygineans of "the" header bricks 3; obviously, the latter maybe replaced'by other nans whereby an equivalent result leg-obtained if, many reason, this is desirable. The walls of these hollow bricks 1, 2, are relatively thin, particularly at their exposed faces where they form the surface of the coking chamber; this thickness will he say only one-half of the thickness employed hitherto, and the heating effect will be increased accordingly. Yet

say, each exposed surface of the flue wall or piedroit is composed of bricks 1 extending less than'half-way into the wall, alternating with bricks 2 extending more than half-Way into the wall. The bricks 1, 2', are hollow to form the channels or flues a for the heating gases. Each brick is provided with a lateral projection b at one side, at the outer or exposed wall portion, and with another projection c at the other side',-at the inner portion lying within the wall. All bricks 1 are alike, and all bricks '2 are alike, but

a piedroit or flue wall so'constructed is very they are used in different positions at opposite faces of the flue wall or piedroit. The projections b, c, of the bricks interlock as shown, and a very strong construction is thus obtained. Unbroken exposed surfaces areobtained with this construction Without using any additional bricks such as 3 in Fig.

in each construction the end bricks may be given a special shape, but the main por-' of bricks of the contacting with each other, and the smallerprojections of two adjacent bricks extending toward each other but being separated and means for maintaining saidv separated relation of said smaller projections.

2. A flue.- wall comprising hollow bricks forming'fiues, each of said bricks having a lateral projection atea'ch side of one of its faces, the projection atone side of each brick1 extending a greater distance therefrom' than' the pro ection at its other side,

the larger projections of two adjacent bricks contacting with each other wliile'the smaller projections oftwo adjacent bricks extend toward each other but have a separation therebetween, and? a filler brick interposed between the two adjacent hollow bricks and extending into said separation.

8. A flue Wall comprising hollow bricks forming flues, each of said bricks having concave lateral surfaces and a lateral projection at each side of the brick, the projection at one side of each brick extending a greater distance therefrom than the projection at its other side, the larger projections of two adjacent bricks contacting with each other while the smaller projections of twov adjacent bricks extend toward each other but have a separation thercbetween, and a filler brick having convex sides adapted to fit the concavelateral surfaces of two adjacent hollow bricks and provided with an extension for filling the separation between the smaller projections thereof] -l. In a flue ,wall, two rows of hollow bricks forming flues, each brick having two unbroken surfaces and two surfaces provided with lateral projections, the projection of a brick in one row being adjacent to theprojection of an adjacent brick in the same row, one unbroken surface of each brick in the ,two rows forming a part of the exterior of the fine wall, and the other unbroken surface of a brick in one row contacting with the other unbroken surface of a brick in the other row, and means for maintaining said projections in each adjacent relation.

In witness whereof I have signed this specification in the presence of two witnesses.

OLIVIER PIETTE.

Witnesses I PAUL GOFFARD, a ALEXIS V. CENrnoER. 

